1.) >> -----Original Message----- >> Mark Brinsmead >> as for Dell >> one could summarise >> "Avoid implementing your RAID using the PERC controllers or PowerVault." That is 100% my experience and what I have seen other say. The problems I have seen, and heard about, and my SA told me about are not isolated. My SA told me and Dell support during a conference call, that they should have a look at their own forum and it is clogged with PERC-RAID problems. 2.) >> -----Original Message----- >> David wrote: >> Have any of you run into the issue whereby >> you lost an entire RAC >> db(crash) due to a an instance loss? You want a count in total or just for one year? ;o) I would be surprised if one running RAC at some point did see a RAC instance hang crash cause the other instance to hang. Granted the often the OS/Config is the root cause and to blame, but I have seen session "GC" waits on one node continue right to the other PASSIVE node if we did not shutdown the first dying node. I have seen a controller error on nodeA hang instance NodeA and during the reconfigure hang instance on NodeB. What fun...I can feel the panic of management as if it were yesterday. :o| Chris Marquez Oracle DBA -- //www.freelists.org/webpage/oracle-l